Cat c15 key engine specs, bolt torques and manuals, including the disassembly and assembly manual, spec sheet and a parts manual. Basic specs are open to everyone and include images, displacement, dimensions and weight, essential bolt tightening torques, the characteristics of the engine like its power and torque. Essential bolt tightening torques are the main bearing cap bolt torque, the connecting rod cap bolt torque and the cylinder head bolt torques.